esphome-docs/components/sensor/bl0940.rst
2022-01-04 10:45:49 +01:00

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Belling BL0940 Energy Monitor
==================================
.. seo::
:description: Instructions for setting up BL0940 power monitors.
:image: bl0940.png
:keywords: BL0940
.. note::
This page is incomplete and could some work. If you want to contribute, please read the
:doc:`contributing guide </guides/contributing>`. This page is missing:
- Images/screenshots/example configs of this device being used in action.
The ``bl0940`` sensor platform allows you to use BL0940 energy monitors sensors with
ESPHome. These are used in some Tuya-devices (e.g. the power metering BW-SHP10)
The communication with this integration is done over a :ref:`UART bus <uart>`.
You must therefore have a ``uart:`` entry in your configuration with both the TX and RX pins set
to some pins on your board and the baud rate set to 4800 with 1 stop bit.
.. code-block:: yaml
# Example configuration entry
uart:
id: uart_bus
tx_pin: TX
rx_pin: RX
baud_rate: 4800
stop_bits: 1
sensor:
- platform: bl0940
uart_id: uart_bus
voltage:
name: 'BL0940 Voltage'
current:
name: 'BL0940 Current'
power:
name: 'BL0940 Power'
energy:
name: 'BL0940 Energy'
temperature:
name: 'BL0940 Internal temperature'
target_temperature:
name: 'BL0940 External temperature'
update_interval: 60s
Configuration variables:
------------------------
- **voltage** (*Optional*): The voltage value of the sensor in Volts.
All options from :ref:`Sensor <config-sensor>`.
- **current** (*Optional*): The current value of the sensor in Amperes. All options from
:ref:`Sensor <config-sensor>`.
- **power** (*Optional*): The (active) power value of the sensor in Watts. All options from
:ref:`Sensor <config-sensor>`.
- **energy** (*Optional*): Use the voltage value of the sensor in kWh.
All options from :ref:`Sensor <config-sensor>`.
- **temperature** (*Optional*): The internal temperature value of the sensor in °C.
All options from :ref:`Sensor <config-sensor>`.
- **target_temperature** (*Optional*): The external value of the sensor in °C. Often not connected and gives garbage data.
All options from :ref:`Sensor <config-sensor>`.
- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
sensor. Defaults to ``60s``.
- **uart_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :ref:`UART Component <uart>` if you want
to use multiple UART buses.
See Also
--------
- :ref:`sensor-filters`
- :apiref:`bl0940/bl0940.h`
- :ghedit:`Edit`